Exterior face of floor mat retention patch



FIG. 1 is a perspective view of the exterior face of floor mat retention patch secured to the underneath side of an automobile floor mat, showing my new design;

FIG. 2 is an enlarged plan view thereof;

FIG. 3 is an enlarged side elevational view thereof, the opposite side, front and back elevational view being identical thereto; and,

FIG. 4 is a perspective view illustrating the use of multiple retention patches on the underside of a floor mat.

The broken line showing in the drawings of a floor mat and an additional retention patch is for environmental purposes and form no part of the claimed design. 

The ornamental design for an exterior face of floor mat retention patch, as shown and described. 